subject

Draw an ERD for the following problem with attributes, primary keys, cardinalities and participation constraints and specialization, if appropriate. An information studies student wants to keep track of the following information. A publishers publishes two kinds of publications: books and journals. Any one publisher publishes at least one book and/or at least one journal. Each book can be written by one or more authors and one author can write one or more books. Each book and journal is characterized by one or more indexed keywords, which are represented by a keyword number and keyword. Not every keyword is used by the journals, however. Both books and journals have a unique number (such as ISBN# for a book and ISSN# for a journal), title and a publisher. For books, the student tracks the published year, all author information and their institutions. For journals, the student keeps the starting year first published, the number of issues to be published per year and the category of the journal (such as academic, newsletter, trade). Each publisher has name, address and phone. Each author has an ID number, name, address, phone, author's affiliated institution and the address of the institution. An author may be affiliated with more than one institution. The student would like to keep only authors who are participating in writing at least one book and institutions that have such authors.

ansver
Answers: 2

Another question on Computers and Technology

question
Computers and Technology, 22.06.2019 19:30
When using a public computer or network, you should always
Answers: 2
question
Computers and Technology, 23.06.2019 09:00
Which best describes the role or restriction enzymes in the analysis of edna a. to break dna into fragments that vary in size so they can be sorted and analyzed b. to amplify small amounts of dna and generate large amounts of dna for analysis c. to purify samples of dna obtained from the environment so they can be analyzed d. to sort different sizes of dna fragments into a banding pattern that can be analyzed
Answers: 1
question
Computers and Technology, 23.06.2019 16:00
Does read theory have answers keys ?
Answers: 1
question
Computers and Technology, 24.06.2019 17:40
Write an assembly language program to input a string from the user. your program should do these two things: 1. count and display the number of words in the user input string. 2. flip the case of each character from upper to lower or lower to upper. for example if the user types in: "hello there. how are you? " your output should be: the number of words in the input string is: 5 the output string is : hello there. how are you?
Answers: 2
You know the right answer?
Draw an ERD for the following problem with attributes, primary keys, cardinalities and participation...
Questions
question
Physics, 20.10.2019 13:30
Questions on the website: 13722363